Sasho...Zavfinos do offer refinement in low end.I wouldnt use them if they didnt.Cant see you not happy with them.As posted mogamis might have slightly more as they are a 8awg wire apposed to 9awg occ.More bass doesnt make for a better cable? imho...These are my results in my system i have found and did.
Also as posted the difference is the zavfinos offer a more polished broader spectrum vs nutralish/mogami 3104.You cant get away from the price difference as the mogami is a cheaper offering.As posted...i ended up with the zavfinos for a reason and am quite content with them.